package com.example.filter;

import jakarta.servlet.*;
import jakarta.servlet.annotation.WebFilter;

import java.io.IOException;

//@WebFilter("/*")
public class Demofilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
        System.out.println("init启动");
    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        System.out.println("filter启动,方形前");
        // 放行
        filterChain.doFilter(servletRequest, servletResponse);

        System.out.println("filter启动,方形后");


    }

    @Override
    public void destroy() {
        System.out.println("destroy启动");
    }
}
